Show openapi docs in release mode

src/routing/index.rs

@@ -1,5 +1,5 @@
 use axum::body::Body;
-use axum::http::{header, StatusCode};
+use axum::http::StatusCode;
 use axum::response::{Html, IntoResponse, Response};
 use axum::Router;
 use axum::routing::get;
@@ -16,16 +16,17 @@ async fn index() -> &'static str {
     "Welcome to the Simplify Truths API!\n"
 }
 
-// TODO open from target dir in release mode.
 async fn open_api() -> Response {
-    let file_path = "./spec/dist/index.html";
+    let file_path = if cfg!(debug_assertions) {
+        "./spec/dist/index.html"
+    } else {
+        "./openapi/index.html"
+    };
     let file = match File::open(file_path).await {
         Ok(file) => file,
         Err(err) => return (StatusCode::NOT_FOUND, format!("File not found: {err}")).into_response(),
     };
-    // convert the `AsyncRead` into a `Stream`
     let stream = ReaderStream::new(file);
-    // convert the `Stream` into an `axum::body::HttpBody`
     let body = Body::from_stream(stream);
 
     Html(body).into_response()